{"action":"Upgrade langchain-core to 0.3.81 (0.x) or 1.2.5 (1.x) or later.","affected":[{"fixed":"1.2.5","introduced":"1.0.0"},{"fixed":"0.3.81","introduced":"0"}],"component":"langchain-core","cve_ids":["CVE-2025-68664"],"ecosystem":"PyPI","epss":0.4293,"exploited":false,"fixed_versions":["1.2.5","0.3.81"],"ghsa_id":"GHSA-c67j-w6g6-q2cm","id":"tcs_01M5KFCAM2GB2Y87GJZD5734DF","modified_at":"2026-10-27T17:00:03.967428014Z","published_at":"2025-12-23T18:46:13Z","references":["https://osv.dev/vulnerability/GHSA-c67j-w6g6-q2cm","https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm","https://nvd.nist.gov/vuln/detail/CVE-2025-68664","https://github.com/langchain-ai/langchain/pull/34455","https://github.com/langchain-ai/langchain/pull/34458","https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8","https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6","https://github.com/langchain-ai/langchain","https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81","https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5","https://github.com/pypa/advisory-database/tree/main/vulns/langchain-core/PYSEC-2026-373.yaml","https://pypi.org/project/langchain-core"],"severity":{"label":"critical","score":9.3},"sources":[{"source":"osv","source_id":"GHSA-c67j-w6g6-q2cm","url":"https://osv.dev/vulnerability/GHSA-c67j-w6g6-q2cm"}],"summary":"LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs"}